Rotary oscillatory engine.



K. L. E. MUELLER.

ROTARY OSGILLATORY ENGINE.

APPLICATION FILED MAY 2s, 190s.

L 39,188. Patented Mar.2,1915

2 SHEETS-SHEET 2.

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KURT I. E. MUELLER, OF DETROIT, MICHIGAN, ASSIG-NOR T0 FREDERICK A.ROESE, ,OF

` MDUN'L CLEMENS, MICHIGAN.

ROTARY OSCILLATORY ENGINE.

Specication of Letters Patent.

Patenten trai. a, isis.

Application filed May 23, 1908,. Serial No. 434:,60.

Toi'aZZ 'whom it mail concern Be it known that l, KURT L. E. MUELLER, acitizen of the United States of America, residing at Detroit, in thecounty of Wayne vand Statey of Michigan, have invented certain new anduseful'lmprovements in Rotary Oscillatory Engines, of which the .fol-

lowing yis a specification, reference being 3 is a sectional view'of thepiston members detached. Fig. 4, is a diagrammatic illus-x Atration ofthe piston rod connections.'

Generally described, my improved engine comprises a cylinder, containinga rotary piston mounted upon a rockable shaft,the latter being soconnected to a crank shaft as to eect an oscillatory movement of thepiston within the cylinder. As preferably constructed, two pistons arearranged within the cylinder, and are adapted to be oscillated inoppositedirections thereby avoidingk the necessity of any stationaryabutments. The pistons separate the space within the cylinder into twoycompartments, one of which constitutes an explosion chamber andcompression-chamber, and the other a suction Vand compression chamber."lhus the explosive mixture is irst drawn into the cylinder in thechamber on one side of the pistons and is compressed therein, while atthe proper timeports are opened through which the compressed dischargeis passed into the explosive chamber expelling the burned gases from aprevious explosion.

In detail, A is a suitable base or bed uponwhich are mounted thecylinders B' and B arranged adjacent to each other, and within each ofwhich are' two pistons C and C adapted to oscillate. One of thesepistons is mounted upon a central rock shaft D, while the other issecured to 'a concentric tubular rockshaft E, both of said shaftspassing out throughthecylinder head, and

being provided respectively with the rock-7 able crank arms .F and G.'llhese crank arms are'connected by rods H to a common crank I, thearrangement being such that the rotation of said crank will produce anopposite movement of the-pistons C C in each cylinder, but asimultaneous corresponding movement of said pistons in both cylinders.

One of the pistons C is provided at opposite vends with cheek plates J Jwhichiit against the heads K K- of the cylinder, while the coperatingpiston C is adapted to fit between these cheek plates. This cooperatingpiston is preferably `mounted upon the central shaft D and the tubularYshaft E for the other piston is cut away between the cheek plates J Jleaving only a segment which bears against the shaft D. Suitable packingstrips L are preferably arranged to form a gas tight joint between thissegment and the shaft D. Pacln'ng strips M are also provided for thepistons to form a gas tight joint with the cylinder.

The cheek plates J J have formed therein ports D, 0 U', which in certainpositions of the piston are brought into registration with ports P, in Pin the opposite heads of the cylinder. The' ports @,-when inregistration with the ports P, constitute exhaust passages through whichthe products of combustion are permitted to escape from the explosionchamber, while the ports O U, when in registration with the ports P P',permit the transfer of the gases from the suction chamber lto theexplosion chamber. rilhis is accomplished by means of a connectingpassage Q formed in the cylinder head with which both of the portscommunicate thereby permitting the gaseous charge to pass from onechamber to the other.V

ln addition to the ports above named, each of the cylinders has openingthereinto the passage R, in which an automatic valve S is located, thispassage constituting the induction port through which the explosivemixture is introduced into the cylinder.

`der B, while an uncompressed charge of gas ccupies the chamber U on theopposite side of the pistons. At the Sametime the cylinder B has itspistons in a corresponding position,

the chamber V being filled with the products of a previous explosion,and the chamber V contains a compressed charge about tobe transferred tothe chamber V. The explosion of the compressed charge in the chamber Uwill cause the opposite movement of the pistons C C and the simultaneousmovement of the pistons in the other cylinder B. This will cause thecompression of the charge of gas in the chamber U of the cylinder B andsimultaneously the compression of the charge which has been transferredfrom the chamber V tothe chamber V in the latter chamber. At thecompletion of the first phase of the oscillatory movement of thepistons, the ports O and P in the cylinder B4 are first brought intoregistration, permitting the gaseousl products of the explosion in thechamber U to be exhausted. Immediately following this,- the ports O Pare registered, which permits the charge of gas in the chamber U', whichhas been compressed, to pass through said portsand the passage Q,entering the chamber -U and expelling the remaining products ofcombustion. At this point, the charge in the chamber V of the cylinderB', which has been compressed, is ignited, and ythe impulse of theexplosion is ltransmitted through the rods to the crank to continue itsrotation. Thus there is an impulse for each half revolution of thecrank.

similar to the organization of an ordinary steam engine,

While I have described a construction employing two cylinders havingtheir pistons connected to a common crank, it is obvious that a singlecylinder will form an operative construction.

The cylinders B B are preferably "incased within a water jacket W, andwater is also preferably introduced into each of the pistons which arehollow. The waterentering the "piston C passes through theshaft.

D, while the other piston C receives itswater supply through ports X inthe lcheek plates J J These ports communicate with' the recess X in theheads of the cylinder,

and the arrangement is such that a water circulation is passed throughthe piston without interfering with .the oscillation thereof.

What l claim as my invention is:

1. The'combination with a cylinder, of a pair of oppositely movingoscillatory pistons therein dividing the cylinder into suction andexplosion chambers, means for admitting theI explosive charge into saidsuction chamber and retaining 1t for a preliminary compression, andmeans for transferring said compressed charge to the explosion chamberand for displacing the products of .a previous explosion thereby.

2. The combination with a cylinder, of a pair of oppositely movingoscillatory pistons thcreindividing said cylinder into vsucdisplacingthereby the products of a pre- A vious plosion. v

3. The combination with a cylinder, o'f a pair of oppositely movingrotary oscillatory pistons dividing lsaid cylinder into alternatelycontracted and expanded explosion and suction chambers, valves operated`-by the movement of said pistons controlling the exhaust from saidexplosion chamber, and a .passage between said suction and explosionchambers and an induction valve for admitting `the explosive lmixtureinto'said. suction chamber during the expansion thereof and forretaining it therein for la pre-'- Vliminary compression, said Apistoncontrolled valve operating upon the completion off said preliminarycompression and transferring the compressed charge to Said explosionchamber and displacing thereby the products of a previous explosion.

4. The combination of a pair of cylinders, a pair` of oppositely movingrotary oscillatory pistons in each of said cylinders dividing the sameinto Asuction and explosion compartments, a common cranlk to which saidpistons arey connected, means for admitting an explosive mixture to thevsuction compartment during the expansion thereofv and for retaining ittherein ,for a prelimi nary compression, means for transferring Athecompressed ycharge to the explosion chamber of the same cylinder andyfor displacing thereby the products of aL previous explosion, the"operations in the two cylinders being alternate, and means foralternately exploding the compressed charges in the .explosion chambersof the cylinders, whereby an explosion is given for each halfrevolution.

The combination with a cylinder, 0f a pair of rotary oscillatorv'pistonstherein, a

cheek plate attached` to one of said pistons movable therewith incontact with the one head of the cylinder, said cheek plate and cylinderhead being providedwith coperating ports which lare thrown intoregistration at predetermined poi said pistons. 4 v f 6. The combinationwith a cylinder, ofa pair of oppositely moving oscillatory lpistonstherein 4dividing the cylinder into suction and explosion chambers,means for admitting an explosive charge into the suctijol chamber andfor transferring the charge to the explosion chamber.

ts in the movement of 7, The eomloination with e, ejylinflen2 of sisaidl pistons petting of en eseillatory pair el oppositely moving rotaryoscillmoiy pistons therein, ineens for aiming; endl compressing anexplosive charge on one sicle of seid piston, means for lranssei'iingand exploding the explosive charge on lie opposite sides of seidpistons, en ineens foi circulating a cooling Huid through eeen olimovemen thereoff,

ln 'l'eslimony whereof l eliix my signature in presence of twoWitnesses;

KURT L. "llViinesses: Y

Y NELLE Kmsnnns., Qlzlms l?. BARRY.

n. Mennnns.

